Pendium setup as package

 **Config is now handled as suggested in flask docs**
* Loads pendium/default_config.py to set up safe defaults
* Tries to load config.py to setup user defined config
* Loads, if defined, config file in PENDIUM_CONFIG environment variable

**Application is now a package**
* Almost everything was pushed to the pendium directory
* run.py runs the application ( app.run ), pendium/__init__.py sets up everything else
* Views are now in a separate file pendium/views.py

**Multiple renderers**
* Added text and html renderers. Check config.py

**Git handling moved to pendium/filesystem.py**
* Views are no longer aware of git, just of the success or failling of the operations

I think that's all...